GUNGRAVE OVERDOSE CHEAT CODES
None.
GUNGRAVE OVERDOSE TIPS & TRICKS
None.
GUNGRAVE OVERDOSE UNLOCKABLES
Unlock Jyuji Kabane
By finishing level 1 as Beyond The Grave.
Unlock Rocketbilly Redcadillac
By finishing level 1 as Beyond The Grave.
Hidden options
By finishing the game as Beyond The Grave, Jyuji Kabane, and Rocketbillly Redcadillac you will unlock the alternate costumes, sound test, stage select, movie viewer, and enemy rush options and bonuses.